support axel on jackstands
take off the wheels
remove diff cover, try not to smell stinky fluid :)
remove the little bolt holding the shaft in that holds the two little gears
pull that shaft and the little gears
push in on the axel you need to need to remove and the end will come out of
the little gear on it exposing the c clip
remove the c clip, don't drop in the stinky fluid :)
now carefully slide out the axel and you can get to the seal
re assemble in reverse order
That is the basic step by step bare minimum details. If you can understand
that you shouldn't have any difficulties.
The hardest part if when you put back the two gears that are not on the
axels, I would put in one and the second would line up 1/2 tooth off. I
finally figured out you have to twist both into place at the same time then
hold them there and then slide the shaft up in.

Fisrt off, I have only done this job on a 1977 3/4 ton and it wasn't
that difficult. Second, I just had this done to a 1990 1/2 ton Suburban
(both sides) and it cost only $143 U.S (at the dealer). I think that
your mechanic is a little high.

axle seal
Group: alt.autos.4x4.chevy-trucks Date: Wed, Oct 29, 2003, 6:48pm
(CST-1) From: snipped-for-privacy@hotmail.com (Jeff)
Has anyone ever replaced an axle seal on a 1989 k1500
how hard is it and what does it take I do most repairs my self and am
very handy and own most tools,
I was told by a mechanic that it is very difficult to do but I think he
would like my $250 for a ten dollar seal and 20 dollars of fluid? any
insight on this would be appreciated.
Thanks Jeff
yep replaced one.......
...or two...or three..
yep kinda hard.....
nope dont think you have the tools for it...
Not something a doit yourselfer should try...
Steve C

How do you know what tools I have. I grew up on a farm with most any tool
you can imagine and then some you can't. Grandfather is a heavy duty diesel
mechanic if I don't have it he will thanks for your .02 cents

As a short answer, If its the Drivers side Diff flange seal, it can be done with
out removal of the
diff.
The right side flang seal I believe the diff needs to be lowered, not as easy as
the left side.
Cheers

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